Sketch based modeling - the author quit part way through as I recall, and I don’t think he recieved the remainder of the funding
Realistic skies and clouds - work was completed but artist feedback was not favorable for the results so Ton decided against integrating it
Nurbana (actually, is in ‘undead’ mode I think) - the author got busy with other things, but has returned to it in recent times.
Pytextures - was replaced by pyNode which will probably be in the next release
ODE physics integration in animation - the author never started it and never recieved any google payment AFAIK
Nurbana - repeat
Verse? - was integrated but still is not ‘feature complete’ and stable enough for general usage.
Mesh bevel - will probably be in next release
Render API - it was determined that the scope was too large and overly ambitious. It gave us good research on what issues need to be overcome - it won’t be integrated
GLSL? - the author is currently busy but plans to pick it back up in the future as mentioned on bf-committers